97896988693805 has 24 divisors (see below), whose sum is σ = 136662135805440. Its totient is φ = 67126450114080.

The previous prime is 97896988693729. The next prime is 97896988693843. The reversal of 97896988693805 is 50839688969879.

It is a de Polignac number, because none of the positive numbers 2^k-97896988693805 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97896988693699 and 97896988693708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3007385 + ... + 14312174.

It is an arithmetic number, because the mean of its divisors is an integer number (5694255658560).

Almost surely, 2^{97896988693805} is an apocalyptic number.

It is an amenable number.

97896988693805 is a deficient number, since it is larger than the sum of its proper divisors (38765147111635).

97896988693805 is a wasteful number, since it uses less digits than its factorization.

97896988693805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17342649 (or 17342642 counting only the distinct ones).

The product of its (nonzero) digits is 101583175680, while the sum is 95.

The spelling of 97896988693805 in words is "ninety-seven trillion, eight hundred ninety-six billion, nine hundred eighty-eight million, six hundred ninety-three thousand, eight hundred five".